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physx/source/fastxml/include/PsFastXml.h

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+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+//  * Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+//  * Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//  * Neither the name of NVIDIA CORPORATION nor the names of its
+//    contributors may be used to endorse or promote products derived
+//    from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#ifndef PSFASTXML_PSFASTXML_H
+#define PSFASTXML_PSFASTXML_H
+
+#include "foundation/PxSimpleTypes.h" // defines basic data types; modify for your platform as needed.
+#include "foundation/PxIO.h"
+#include "foundation/PxAssert.h"
+#include "PsAllocator.h"
+
+namespace physx
+{
+namespace shdfnd
+{
+
+class FastXml
+{
+	PX_NOCOPY(FastXml)
+
+  public:
+	class AttributePairs
+	{
+		int argc;
+		const char** argv;
+
+	  public:
+		AttributePairs() : argc(0), argv(NULL)
+		{
+		}
+		AttributePairs(int c, const char** v) : argc(c), argv(v)
+		{
+		}
+
+		PX_INLINE int getNbAttr() const
+		{
+			return argc / 2;
+		}
+
+		const char* getKey(uint32_t index) const
+		{
+			PX_ASSERT((index * 2) < uint32_t(argc));
+			return argv[index * 2];
+		}
+
+		const char* getValue(uint32_t index) const
+		{
+			PX_ASSERT((index * 2 + 1) < uint32_t(argc));
+			return argv[index * 2 + 1];
+		}
+
+		const char* get(const char* attr) const
+		{
+			int32_t count = argc / 2;
+			for(int32_t i = 0; i < count; ++i)
+			{
+				const char* key = argv[i * 2], *value = argv[i * 2 + 1];
+				if(strcmp(key, attr) == 0)
+					return value;
+			}
+
+			return NULL;
+		}
+	};
+
+	/***
+	* Callbacks to the user with the contents of the XML file properly digested.
+	*/
+	class Callback
+	{
+	  public:
+		virtual ~Callback()
+		{
+		}
+		virtual bool processComment(const char* comment) = 0; // encountered a comment in the XML
+
+		// 'element' is the name of the element that is being closed.
+		// depth is the recursion depth of this element.
+		// Return true to continue processing the XML file.
+		// Return false to stop processing the XML file; leaves the read pointer of the stream right after this close
+		// tag.
+		// The bool 'isError' indicates whether processing was stopped due to an error, or intentionally canceled early.
+		virtual bool processClose(const char* element, uint32_t depth, bool& isError) = 0; // process the 'close'
+		// indicator for a previously
+		// encountered element
+
+		// return true to continue processing the XML document, false to skip.
+		virtual bool processElement(const char* elementName,    // name of the element
+		                            const char* elementData,    // element data, null if none
+		                            const AttributePairs& attr, // attributes
+		                            int32_t lineno) = 0;        // line number in the source XML file
+
+		// process the XML declaration header
+		virtual bool processXmlDeclaration(const AttributePairs&, // attributes
+		                                   const char* /*elementData*/, int32_t /*lineno*/)
+		{
+			return true;
+		}
+
+		virtual bool processDoctype(const char* /*rootElement*/, // Root element tag
+		                            const char* /*type*/,        // SYSTEM or PUBLIC
+		                            const char* /*fpi*/,         // Formal Public Identifier
+		                            const char* /*uri*/)         // Path to schema file
+		{
+			return true;
+		}
+
+		virtual void* allocate(uint32_t size)
+		{
+			return getAllocator().allocate(size, "FastXml", __FILE__, __LINE__);
+		}
+
+		virtual void deallocate(void* ptr)
+		{
+			getAllocator().deallocate(ptr);
+		}
+	};
+
+	virtual bool processXml(PxInputData& buff, bool streamFromMemory = false) = 0;
+
+	virtual const char* getError(int32_t& lineno) = 0; // report the reason for a parsing error, and the line number
+	// where it occurred.
+
+	FastXml()
+	{
+	}
+
+	virtual void release(void) = 0;
+
+  protected:
+	virtual ~FastXml()
+	{
+	}
+};
+
+FastXml* createFastXml(FastXml::Callback* iface);
+
+} // shdfnd
+} // physx
+
+#endif // PSFASTXML_PSFASTXML_H